Place lamb on hot grill grate; cover and cook 20 to 35 minutes (depending on thickness) for medium-rare, turning lamb over once halfway through cooking and removing pieces to cutting board as they are done. When remaining lamb is done, transfer to same cutting board and let stand 10 minutes to set juices for easier slicing. Serve lamb with Mint Pesto.

Tips & Techniques

ReciTip: The thickness of a butterflied leg of lamb will vary; check thinner pieces early for doneness, cut off those sections as they are cooked, and place them on cutting board. Cover with foil to keep warm.